RPi4 is built into the sbitx, the command line exit is not enough here either, after that the power supply must be switched off as well.
If you don't turn it off, it will remain under constant power. I have been using the command and power off for a year and a half now.
So far I have forgotten to turn off the power once and after about 5 hours I couldn't start it, I had to use the backup to restore.
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Gyula HA3HZ
HA3HZ